jabberd2  2.2.16
sm/mod_deliver.c
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00001 /*
00002  * jabberd - Jabber Open Source Server
00003  * Copyright (c) 2002 Jeremie Miller, Thomas Muldowney,
00004  *                    Ryan Eatmon, Robert Norris
00005  *
00006  * This program is free software; you can redistribute it and/or modify
00007  * it under the terms of the GNU General Public License as published by
00008  * the Free Software Foundation; either version 2 of the License, or
00009  * (at your option) any later version.
00010  *
00011  * This program is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
00014  * GNU General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU General Public License
00017  * along with this program; if not, write to the Free Software
00018  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA02111-1307USA
00019  */
00020 
00021 #include "sm.h"
00022 
00030 static mod_ret_t _deliver_in_sess(mod_instance_t mi, sess_t sess, pkt_t pkt)
00031 {
00032     /* ensure from is set correctly if not already by client */
00033     if(pkt->from == NULL || jid_compare_user(pkt->from, sess->jid) != 0) {
00034         if(pkt->from != NULL)
00035             jid_free(pkt->from);
00036 
00037         pkt->from = jid_dup(sess->jid);
00038         nad_set_attr(pkt->nad, 1, -1, "from", jid_full(pkt->from), 0);
00039     }
00040 
00041     /* no to address means its to us */
00042     if(pkt->to == NULL) {
00043         /* drop iq-result packets */
00044         /* user client is confirming all iq-set, but we usually do not track these
00045          * confirmations and we need to drop it here, not loop back to client */
00046         if(pkt->type == pkt_IQ_RESULT) {
00047             pkt_free(pkt);
00048             return mod_HANDLED;
00049         }
00050 
00051         /* iq packets without to should have been already handled by modules */
00052         if(pkt->type & pkt_IQ) {
00053             return -stanza_err_FEATURE_NOT_IMPLEMENTED;
00054         }
00055 
00056         /* supplant user jid as 'to' */
00057         pkt->to = jid_dup(sess->jid);
00058         nad_set_attr(pkt->nad, 1, -1, "to", jid_full(pkt->to), 0);
00059     }
00060 
00061     /* let it go on the wire */
00062     pkt_router(pkt);
00063 
00064     return mod_HANDLED;
00065 }
00066 
00067 static mod_ret_t _deliver_pkt_user(mod_instance_t mi, user_t user, pkt_t pkt)
00068 {
00069     sess_t sess;
00070 
00071     /* if there's a resource, send it direct */
00072     if(*pkt->to->resource != '\0') {
00073         /* find the session */
00074         sess = sess_match(user, pkt->to->resource);
00075 
00076         /* and send it straight there */
00077         if(sess != NULL) {
00078             pkt_sess(pkt, sess);
00079             return mod_HANDLED;
00080         }
00081 
00082         /* no session */
00083         if(pkt->type & pkt_PRESENCE) {
00084             pkt_free(pkt);
00085             return mod_HANDLED;
00086 
00087         } else if(pkt->type & pkt_IQ)
00088             return -stanza_err_SERVICE_UNAVAILABLE;
00089         
00090         /* unmatched messages will fall through (XMPP-IM r20 s11 rule 2) */
00091     }
00092 
00093     return mod_PASS;
00094 }
00095 
00096 DLLEXPORT int module_init(mod_instance_t mi, char *arg) {
00097     module_t mod = mi->mod;
00098 
00099     if(mod->init) return 0;
00100 
00101     mod->in_sess = _deliver_in_sess;
00102     mod->pkt_user = _deliver_pkt_user;
00103 
00104     feature_register(mod->mm->sm, "message");
00105 
00106     return 0;
00107 }